YOU SAID:

so like erin has a blade in here phone case

INTO JAPANESE

エリンがここの電話ケースに刃を持っているように

BACK INTO ENGLISH

Like Erin has a blade in her phone case here

INTO JAPANESE

エリンの携帯ケースに刃があるように

BACK INTO ENGLISH

Just like Erin's phone case has a blade

INTO JAPANESE

エリンのスマホケースに刃があるように

BACK INTO ENGLISH

Just like Erin's phone case has a blade